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kernel: explain a commit-limit failure at startup (#395)

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When CreateFileMapping cannot reserve the guest backing store the log only
carries the raw Win32 error, which gives no clue that the paging file is the
thing to change. Print the size that was asked for and say so directly when the
failure is ERROR_NO_SYSTEM_RESOURCES or ERROR_COMMITMENT_LIMIT.
This commit is contained in:
Mehmet Cambaz
2026-08-29 15:20:36 +03:00
committed by GitHub
parent 9da390bc0a
commit 947576363e
1 changed files with 10 additions and 1 deletions
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src/kernel/memoryAddressSpace.inc
+10 -1
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@@ -659,7 +659,16 @@ public:
#endif
ReserveGuestRegions();
m_backing = new GuestBackingStore(backing_size);
EXIT_IF(!m_backing->IsAvailable());
if (!m_backing->IsAvailable()) {
#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
EXIT("could not reserve %" PRIu64 " MB for guest direct memory. Windows commits\n"
"this up front, so the paging file is usually what needs to be larger.\n",
backing_size / (1024U * 1024U));
#else
EXIT("could not reserve %" PRIu64 " MB for guest direct memory\n",
backing_size / (1024U * 1024U));
#endif
}
}
~GuestAddressSpace() {